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Temporomandibular joint biomechanics and equine incisor occlusal plane maintenance

In equine dentistry, the physiological incisor occlusal surface is visually perceived as a plane with a distinct inclination to the head’s coronal plane, extending rostro-ventrally to caudo-dorsally. To better understand the formation of this inclined plane and its connection to dental wear, we inve...

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Autores principales: Sterkenburgh, Tomas Rudolf, Hartl, Bettina, Peham, Christian, Nowak, Michael, Kyllar, Michal, Kau, Silvio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10549988/
https://www.ncbi.nlm.nih.gov/pubmed/37799811
http://dx.doi.org/10.3389/fbioe.2023.1249316
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author Sterkenburgh, Tomas Rudolf
Hartl, Bettina
Peham, Christian
Nowak, Michael
Kyllar, Michal
Kau, Silvio
author_facet Sterkenburgh, Tomas Rudolf
Hartl, Bettina
Peham, Christian
Nowak, Michael
Kyllar, Michal
Kau, Silvio
author_sort Sterkenburgh, Tomas Rudolf
collection PubMed
description In equine dentistry, the physiological incisor occlusal surface is visually perceived as a plane with a distinct inclination to the head’s coronal plane, extending rostro-ventrally to caudo-dorsally. To better understand the formation of this inclined plane and its connection to dental wear, we investigated the hypothesis that it arises from masticatory movements and the considerable distance between mandibular articular heads and the incisor occlusal surfaces, acting as the three points of support for the mandibles. Leveraging data from a large-scale clinical study involving static and dynamic orthodontic measurements in horses, we approximated the mandibular movement range where incisor occlusion and dental wear occur. By introducing and testing a segment coordinate system, we explored possible angular deviations from the occlusal plane caused by mandibular roll and pitch rotations during two lateral mandibular movement patterns, protrusion and retrusion. Theoretical biomechanical calculations and simulations confirmed the visual perception of the incisor occlusal surface as a plane. To further examine our assumptions, we employed a simple mechanical simulator to assess incisor normal occlusion and provoked malocclusions (diagonal, smile, and frown bite) by modifying temporomandibular joint (TMJ) movement patterns. The results from clinical investigations were corroborated by both the theoretical analysis and mechanical simulations, strengthening our understanding of the biomechanical basis behind the physiological incisor occlusal plane maintenance in horses. These findings have significant implications for equine dental health and contribute to a thorough understanding of TMJ dynamics.
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spelling pubmed-105499882023-10-05 Temporomandibular joint biomechanics and equine incisor occlusal plane maintenance Sterkenburgh, Tomas Rudolf Hartl, Bettina Peham, Christian Nowak, Michael Kyllar, Michal Kau, Silvio Front Bioeng Biotechnol Bioengineering and Biotechnology In equine dentistry, the physiological incisor occlusal surface is visually perceived as a plane with a distinct inclination to the head’s coronal plane, extending rostro-ventrally to caudo-dorsally. To better understand the formation of this inclined plane and its connection to dental wear, we investigated the hypothesis that it arises from masticatory movements and the considerable distance between mandibular articular heads and the incisor occlusal surfaces, acting as the three points of support for the mandibles. Leveraging data from a large-scale clinical study involving static and dynamic orthodontic measurements in horses, we approximated the mandibular movement range where incisor occlusion and dental wear occur. By introducing and testing a segment coordinate system, we explored possible angular deviations from the occlusal plane caused by mandibular roll and pitch rotations during two lateral mandibular movement patterns, protrusion and retrusion. Theoretical biomechanical calculations and simulations confirmed the visual perception of the incisor occlusal surface as a plane. To further examine our assumptions, we employed a simple mechanical simulator to assess incisor normal occlusion and provoked malocclusions (diagonal, smile, and frown bite) by modifying temporomandibular joint (TMJ) movement patterns. The results from clinical investigations were corroborated by both the theoretical analysis and mechanical simulations, strengthening our understanding of the biomechanical basis behind the physiological incisor occlusal plane maintenance in horses. These findings have significant implications for equine dental health and contribute to a thorough understanding of TMJ dynamics. Frontiers Media S.A. 2023-09-20 /pmc/articles/PMC10549988/ /pubmed/37799811 http://dx.doi.org/10.3389/fbioe.2023.1249316 Text en Copyright © 2023 Sterkenburgh, Hartl, Peham, Nowak, Kyllar and Kau. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Bioengineering and Biotechnology
Sterkenburgh, Tomas Rudolf
Hartl, Bettina
Peham, Christian
Nowak, Michael
Kyllar, Michal
Kau, Silvio
Temporomandibular joint biomechanics and equine incisor occlusal plane maintenance
title Temporomandibular joint biomechanics and equine incisor occlusal plane maintenance
title_full Temporomandibular joint biomechanics and equine incisor occlusal plane maintenance
title_fullStr Temporomandibular joint biomechanics and equine incisor occlusal plane maintenance
title_full_unstemmed Temporomandibular joint biomechanics and equine incisor occlusal plane maintenance
title_short Temporomandibular joint biomechanics and equine incisor occlusal plane maintenance
title_sort temporomandibular joint biomechanics and equine incisor occlusal plane maintenance
topic Bioengineering and Biotechnology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10549988/
https://www.ncbi.nlm.nih.gov/pubmed/37799811
http://dx.doi.org/10.3389/fbioe.2023.1249316
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